Quick-adjusting device



NOV. 4, 1941. ZAMARRA 2,261,537

QUICK-ADJUSTING DEVICE Filed Dec. 6, 1940 a INVENTOR Emi/Zmra.

63 Mn-i TTORNEYS Patented Nov. 4-, 1941 UNITED STATES PATENT OFFICE-2,261,537 QUICK- DJUSTING DEVICE Emil Zamarra, Newark, N. J. ApplicationDecember 6, 1940, Serial No. 368,787 2 Claims. (01. 33-154) Thisinvention relates to an improved quickof the nut, the same as inmanufacturing an adjusting device including a nut which is adaptordinarynut. After the threads have thus been ed to slide along a shank formaking wide adformed, the nut is reamed out at an angle to its justmentsand which is adapted to threadedly normal axis, as indicated by the dotand dash engage the shank for making fine adjustments. 5 lines l9. Thuspart of the threads at the oppo- When a wide adjustment is to be made inthe site sides and opposite ends of the nut are cut location of athreaded nut, for instance in setaway; part remain; The'end of the nutwhich ting a measuring instrument, it is tedious to is adapted to engagethe collar is 'cut away as 7 turn the nut a great many times, especiallyif indicated at 20 and is provided with a sharpthis has to be doneoften. cornered. annular shoulder 2! adapted to be The object of' thepresent invention is to prosnugly engaged by a flange on the collar.

Vide a device of this character which is capable The collar IS in thedevice illustrated is also of being readily adjusted and which is alsosimmade from a single piece of metal and comprises ple and inexpensiveto manufacture. a portion 22 which is adapted to slide along The presentinvention provides a quick-ad- 1 the shank l0 and an annular flange 23which is justing device including a nut and a collar, the adapted tosnugly seat against the shoulder 2| nut and collar having inter-engagingportions of the nut. The collar is hollowed out so that W in threadedengagement with the end of the nut may extend into the collar.

the hank w es ortions are engaged, and By providing the cut-awayportions on the the nut being eeeptmmeenmezeeetanefleegegeaeneewhe wnemwhen its axis is tilted at an angle to the axis facilitated. of theshank. According to the preferred form When it is desired to make fineadjustments of the invention, the nut and collar are each the annularflange 23 of the collar is engaged made ofa single piece of metal. withthe shoulder 2| on the nut. Since these An illustrative embodiment ofthe invention 2 male and female portions on the nut and on is sh wn inthe ac ompanying drawing wherein: th collar seat snugly, the nut is heldwith its Fig. 1 is a front view of calipers including a normal axis inline with the axis of the shank quick-adjusting device in accordancewith the so that the threads on the nut engage the threads invention; ofthe shank. Fine adjustments can then be Figs. 2, 3' and 4 are sectionsof the device, made. When it is desired to make a wide adenlarged sixtimes; justment, the collar is simply slid toward the Fig. 2 is asection through the nut at one left, away" from the nut and against theaction stage of its manufacture; of the spring 9, and the nut is tilted,as shown Fig. 3 is a section through the device showin Fig. 4, so thatit can be slid along the shank .ing the nut and collar engaged formaking line to any desired position. The nut is then tipped adjustments;and back into thread-engaging position, and the col- Fig. 4 is a sectionsimilar to Fig. 3 but showlar is engaged with the nut, as previouslydethe nut and collar diseng ged fo mak ng scribed, for making fineadjustments. wide adjustments. The present invention thus provides anex- Calipers of standard construction are shown 40 tremely simple andinexpensive'construction. in Fig. 1 to illustrate one application of myThe collar can be cast or formed by simple maquick-adjusting device.These calipers include chine operations. The nut is made from a sinarms6 and l pivoted at 8 and engaged by a gle piece of metal and requiresonly a single spring 9 which tends to spread the arms. A reaming inaddition to the operations required shank ill having threads I8 isattached to the for making an ordinarynut. The device is easily arm 6 bymeans of a pivoted lug II and extends assembled, since the onlyadditional operation through a pivoted lug I2 on the arm I. The requiredis slipping the collar on the shank. As shank is provided with a head l3to prevent the previously indicated, the operation of the deviceadjusting nut from falling off. is simple and rapid.

The nut iii in the device illustrated is made The terms and expressionswhich have been from a single piece of metal. It may be proemployed areused as terms of description and vided with a knurled flange l5a. Asbest shown not of limitation, and there is no intention, in in Fig. 2,threads l7, whichare adapted to fit the use of such terms andexpressions, of exthreads IS on the shank, are formed in the nut eludingany equivalents of the features shown with their axis coinciding withthe normal axis and described, or portions thereof, but it is rec-Winized that various modifications are possible within the scope of theinvention claimed.

What I claim is:

1. A quick-adjusting device for use in combination with a threadedshank, comprising a nut having threads formed therein for threadedlyengaging the shank, the axis 01 said threads coinciding with the normalaxis of the nut, and portions of said threads being cut away at oppositesides and opposite ends of the nut to enable the nut to slide along theshank when held at an angle thereto,and a collar having a sliding fit onthe shank, said nut and collar having inter-engageable square-corneredshoulder and flange portions constructed so that when engaged the nut isheld in threaded engagement with the shank.

2. A quick-adjusting device for use in combination with a threadedshank, comprising a nut having threads formed therein for threadedlyengaging the shank, the axis of said threads coinciding with the normalaxis of the nut, and portions of said threads being cut away at oppositesides and opposite ends of the nut to enable the nut to slide along theshank when held at an angle thereto, and a. collar having a slid-

